294 NEARCTIC ERYTHRONEURA (hOMOPTERa) 



Erythroneura seutelleris Gillette 



Tuphlori/ba roint-.s var. scutcUeris. Gillette, C. P. Am. Typhlocybinae, 



1898, p. 764. [Type No. 3449, U. S. N. M., which is labelled "Kans. 

 2047."] 



Because most of the specimens I haye examined have the fourth 

 apical cell (Ustinctly angulate instead of merely ol:»lique, and 

 because I have seen no intergrades in the matter of scutellar col- 

 oration, I am sepai-ating seutelleris as a species distinct from E. 

 7tta(ulata, to which il is similar in general coloration. The typ- 

 i(;al variety has the color markings red; there is also a yellow- 

 spotted form. The known range of E. seutelleris extends from 

 Maryland and Virginia to Ohio, Tennessee and Kansas. 



Erythroneura seutelleris Gillette, red form 

 Bibliographical reference same as for the species. 



Vertex pale yellow with a red marking connecting two discal spots with 

 front and hind margins and inner borders of eyes, or traces of such markings; 

 pronotum ])ale yellow anteriorly with obscure reddish markings; scutellum 

 and posterior half, sometimes all, of pronotum and parts of head smoky to 

 black ; tegmina whitish to yellowish hyaline, marked with irregular red spots, 

 of which three are on clavus (the upper two tending to fuse), and those on 

 corium tend to be arranged in two oblique series; a ramose red line on cross- 

 veins. 



Length, 2.73 mm.; vertex: LM 5.5, LE 3, WA 10.5, WP 17.5, OA 4.5, OP 

 10, OH 14; pronotum: L 10, W 19; tegmen 12-59. 



Other specimens than the type examined (2.3 to 2.77 mm.) 

 were collected at Plummer's Island, Maryland, and Maywood, 

 Alexandria County, Virginia, (W. L. McAtee), [W. L. M.]. 



Erythroneura seutelleris Ciillette, yellow form 



Like the preceding except that the color markings are orange-yellow. 



Length, 2.77 mm.; vertex: LM 6, LE 3, WA 10.5, WP 18, OA 5, OP 9.5, 

 OH 14; pronotum: L 9, W 19; tegmina 14-50. Measurements from a 

 male, collected two miles west of St. Louis, Missouri, Ai)ril 25, 1904, (W. V. 

 Warner) [U. S. N. M.], the only specimen seen. 



Erythroneura basilaris Say 



l'.[clliyu)iia] IxtnUnris. Say, Thomas. Desc. new Ilem. Ins., Journ. Ac. 



Nat. Sci. Phila. iv, 1825, ]). 345. Gompl. Writings, ii, 1859, p. 2f)0. 



[Missouri.]. 

 Tiiplilorjilxi conies variety Ixisihiris. (lilictte, ('. I*. Am. Tv|)lilocyl)iiia(>, 



1898, p. 700. 



I have discoveied no intei'grades betwec^n basilaris and other 

 forms of Eryihroneuro, so treat it as a species. It differs stmc- 

 tut:il[y from E. eotnes Say in having the iniuM' (fourth) cross-vein 



